Quenching　alkaline　bismuth　titanates　from　sintering　temperatures　results　in　increased　lattice　distortion　and　consequently　higher　depolarization　temperature.　This　work　investigates　the　influence　of　quenching　on　the　ergodicity　of　relaxor　Na1/2Bi1/2TiO3-BaTiO3-K0.5Na0.5NbO3.　A　distinct　departure　from　ergodicity　is　evidenced　from　the　increase　in　remanent　polarization　and　the　absence　of　frequency　dispersion　in　the　permittivity　response　of　poled　samples.　Further,　the　samples　exhibit　enhanced　negative　strain　upon　application　of　electric　field,　indicating　proclivity　towards　correlated　polar　nanoregions,　corroborated　by　the　enhanced　tetragonal　distortion.　As　a　result,　ergodic　relaxor　Na1/2Bi1/2TiO3-6BaTiO(3)-3K(0.5)Na(0.5)NbO(3)　exhibits　a　depolarization　temperature　of　85　degrees　C　with　a　60%　increase　in　remanent　polarization　and　approximately　a　threefold　increase　in　remanent　strain　upon　quenching.　Quenching-induced　changes　in　the　local　environment　of　Na+　and　Bi3+　cations　hinder　the　development　of　ergodicity　promoted　by　the　A-site　disorder.　These　results　provide　new　insight　into　tailoring　ergodicity　of　relaxor　ferroelectrics.